Read Youkai Shoujo - Monsuga Manga:
Nishizuru Yakki is a permanent part-timer, regular customer in a maid-cafe, and 20-year-old virgin. What makes him special is his ability to see ghosts. But ghosts are not monsters, they are mostly harmless. At least our hero can live by simply ignoring them. Yakki never believed in monsters until the day when he meets the girl named Rokka. This cheerful girl appears to have a secret...